Since 2009-10, Dustin Johnson has the most tournament wins, with 22 tournament wins.

most wins since 2009-2010
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JohnsonMcIlroyThomasSpiethDayWatsonWoodsRoseReedDeChambeauKoepkaMatsuyamaMickelsonSnedekerScottRahmCantlayKucharSimpsonHorschelWalkerLeishman221914131212111098888887777666
NAMEEVENTSWINSTOP 10ROUNDSMONEY
Dustin JohnsonDustin Johnson40822105863$69,191,214
Rory McIlroyRory McIlroy2701995711$57,609,767
Justin ThomasJustin Thomas1781467663$46,699,999
Jordan SpiethJordan Spieth2171375778$50,412,256
Jason DayJason Day4011279833$47,625,732
Bubba WatsonBubba Watson4241261864$42,328,193
Tiger WoodsTiger Woods1441134415$28,032,667
Justin RoseJustin Rose3941077791$46,593,235
Patrick ReedPatrick Reed248955867$36,321,768
Bryson DeChambeauBryson DeChambeau122834415$25,678,435
Brooks KoepkaBrooks Koepka208851570$36,861,834
Hideki MatsuyamaHideki Matsuyama198853733$38,076,619
Phil MickelsonPhil Mickelson425853871$38,943,004
Brandt SnedekerBrandt Snedeker4838631,000$34,367,958
Adam ScottAdam Scott350865787$38,896,452
Jon RahmJon Rahm111757405$32,345,618
Patrick CantlayPatrick Cantlay109738419$26,182,883
Matt KucharMatt Kuchar5007911,061$46,594,429
Webb SimpsonWebb Simpson4867781,013$42,525,721
Billy HorschelBilly Horschel378653941$30,950,864
Jimmy WalkerJimmy Walker482644964$25,182,439
Marc LeishmanMarc Leishman480652989$33,013,539
Zach JohnsonZach Johnson4916521,019$30,628,790
Bill HaasBill Haas4906461,002$25,920,152
Collin MorikawaCollin Morikawa63524225$17,641,399
StatMuse has season-level data for tournament wins going back to the 1979-80 season.